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Merge pull request #325 from BitcoinCashKit/add-crypto-opcodes
✨ Add and implement OpRipeMd160, OP_SHA1, OP_SHA256, OP_HASH…
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19 changes: 19 additions & 0 deletions
19
BitcoinCashKit/Core/Scripts/OP_CODE/Crypto Operators/OP_CODESEPARATOR.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| // | ||
| // OP_CODESEPARATOR.swift | ||
| // BitcoinCashKit | ||
| // | ||
| // Created by Shun Usami on 2018/08/09. | ||
| // Copyright © 2018 BitcoinCashKit developers. All rights reserved. | ||
| // | ||
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| import Foundation | ||
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| // All of the signature checking words will only match signatures to the data after the most recently-executed OP_CODESEPARATOR. | ||
| public struct OpCodeSeparator: OpCodeProtocol { | ||
| public var value: UInt8 { return 0xab } | ||
| public var name: String { return "OP_CODESEPARATOR" } | ||
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| public func mainProcess(_ context: ScriptExecutionContext) throws { | ||
| // do nothing | ||
| } | ||
| } |
25 changes: 25 additions & 0 deletions
25
BitcoinCashKit/Core/Scripts/OP_CODE/Crypto Operators/OP_HASH256.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| // | ||
| // OP_HASH256.swift | ||
| // BitcoinCashKit | ||
| // | ||
| // Created by Shun Usami on 2018/08/09. | ||
| // Copyright © 2018 BitcoinCashKit developers. All rights reserved. | ||
| // | ||
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| import Foundation | ||
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| // The input is hashed two times with SHA-256. | ||
| public struct OpHash256: OpCodeProtocol { | ||
| public var value: UInt8 { return 0xaa } | ||
| public var name: String { return "OP_HASH256" } | ||
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| // input : in | ||
| // output : hash | ||
| public func mainProcess(_ context: ScriptExecutionContext) throws { | ||
| try context.assertStackHeightGreaterThan(1) | ||
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| let data: Data = context.stack.removeLast() | ||
| let hash: Data = Crypto.sha256sha256(data) | ||
| context.stack.append(hash) | ||
| } | ||
| } |
25 changes: 25 additions & 0 deletions
25
BitcoinCashKit/Core/Scripts/OP_CODE/Crypto Operators/OP_RIPEMD160.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| // | ||
| // OP_RIPEMD160.swift | ||
| // BitcoinCashKit | ||
| // | ||
| // Created by Shun Usami on 2018/08/09. | ||
| // Copyright © 2018 BitcoinCashKit developers. All rights reserved. | ||
| // | ||
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| import Foundation | ||
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| // The input is hashed using RIPEMD-160. | ||
| public struct OpRipemd160: OpCodeProtocol { | ||
| public var value: UInt8 { return 0xa6 } | ||
| public var name: String { return "OP_RIPEMD160" } | ||
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| // input : in | ||
| // output : hash | ||
| public func mainProcess(_ context: ScriptExecutionContext) throws { | ||
| try context.assertStackHeightGreaterThan(1) | ||
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| let data: Data = context.stack.removeLast() | ||
| let hash: Data = Crypto.ripemd160(data) | ||
| context.stack.append(hash) | ||
| } | ||
| } |
25 changes: 25 additions & 0 deletions
25
BitcoinCashKit/Core/Scripts/OP_CODE/Crypto Operators/OP_SHA1.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| // | ||
| // OP_SHA1.swift | ||
| // BitcoinCashKit | ||
| // | ||
| // Created by Shun Usami on 2018/08/09. | ||
| // Copyright © 2018 BitcoinCashKit developers. All rights reserved. | ||
| // | ||
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| import Foundation | ||
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| // The input is hashed using SHA-1. | ||
| public struct OpSha1: OpCodeProtocol { | ||
| public var value: UInt8 { return 0xa7 } | ||
| public var name: String { return "OP_SHA1" } | ||
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| // input : in | ||
| // output : hash | ||
| public func mainProcess(_ context: ScriptExecutionContext) throws { | ||
| try context.assertStackHeightGreaterThan(1) | ||
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| let data: Data = context.stack.removeLast() | ||
| let hash: Data = Crypto.sha1(data) | ||
| context.stack.append(hash) | ||
| } | ||
| } |
25 changes: 25 additions & 0 deletions
25
BitcoinCashKit/Core/Scripts/OP_CODE/Crypto Operators/OP_SHA256.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| // | ||
| // OP_SHA256.swift | ||
| // BitcoinCashKit | ||
| // | ||
| // Created by Shun Usami on 2018/08/09. | ||
| // Copyright © 2018 BitcoinCashKit developers. All rights reserved. | ||
| // | ||
|
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| import Foundation | ||
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| // The input is hashed using SHA-256. | ||
| public struct OpSha256: OpCodeProtocol { | ||
| public var value: UInt8 { return 0xa8 } | ||
| public var name: String { return "OP_SHA256" } | ||
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| // input : in | ||
| // output : hash | ||
| public func mainProcess(_ context: ScriptExecutionContext) throws { | ||
| try context.assertStackHeightGreaterThan(1) | ||
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| let data: Data = context.stack.removeLast() | ||
| let hash: Data = Crypto.sha256(data) | ||
| context.stack.append(hash) | ||
| } | ||
| } |
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